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Showing 1 to 20 of 63 for “"Soxhlet"”.
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Comparative extraction techniques for environmental pollutants
… Pollutant Organics, will be evaluated by both Soxhlet and microwave-assisted extraction (MAE) for two classifications of compounds. The common procedure for sample preparation of solids is Soxhlet extraction. This is a lengthy operation and uses abundant solvent volumes. With ever changing …
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Profiling studies of five Namibian indigenous seed oils obtained using three different extraction methods
… method, machine-operated cold pressing and Soxhlet extraction. The oils studied were Citrullus lanatus (Kalahari melon) oil, Schinziophyton rautanenii (Schinz) Radcl.-Sm. (Manketti) nut oil, Sclerocarya birrea (A. Rich) Hochst. (Marula) nut oil, Ximenia americana (Blue sour plum) nut oil and …
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Supercritical fluid extraction of polychlorinated biphenyls and organochlorine pesticides from mussel tissue (Mytilus edulis)
… demonstrated, and compared to traditional Soxhlet extractions. The aim of this study was to determine the efficacy of SFE for the extraction of these lipophilic compounds which involved a spike study to determine the feasibility of on-line sample clean-up by an inclusion of activated …
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Analysis of wood pulp extracts utilizing gas chromatography-mass spectroscopy
… (CTMP) pulps as well as Kraft (BKP) pulps were Soxhlet extracted with solvents of different polarity. These two types of pulp extracts were then compared qualitatively using GC-FID and GC-MSD as well as quantitatively based on the percent of extractives obtained. For all the pulps studied, the …
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Delta-7-Sterole und Delta-7-Sterolglykoside aus Samen von Cucurbita pepo L.
… pepo L. wurden Sterole und Sterolglykoside durch Soxhlet-Extraktion und Festphasenextraktion isoliert. Mittels GC-MS und NMR-Spektroskopie konnten die Strukturen von fünf Delta-7-Sterolen aufgeklärt werden. Durch enzymatische Hydrolyse von Sterolglykosiden und anschließende Identifizierung der …
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Estudo de diferentes métodos de extração por Ultra-Som de pesticidas em latossolo utilizando técnicas cromatográficas
… as técnicas mais comumente utilizadas, como o soxhlet, o banho e a sonda de ultra-som. As análises foram realizadas por Cromatografia Líquida de Alta Eficiência com Detector UV-visível (lufenuron e imazetapir) e Cromatografia Gasosa com Detector Seletivo de Massas (monocrotofós, tiabendazole e …
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Characterization of antioxidant activities of soybeans and assessment of their bioaccessibility after in vitro digestion
… strategies. The extraction techniques included soxhlet extraction, conventional solvent extraction, and ultrasonic-assisted extraction (UAE) with 5 different common solvent systems including 50% and 80% aqueous acetone, 50 and 70% aqueous ethanol, and 80% aqueous methanol. The TPC in the soybean …
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Determination of Extractables from Cranberry Seeds Using Supercritical CO₂
… extractables (pure CO₂) have been compared with Soxhlet extractables (hexane) to evaluate the feasibility of SFE as an alternative extraction method. The extractables obtained via hexane and SF CO₂, which were derivatized and identified by gas chromatography mass spectrometry (GC-MS), contained …
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Verðmætasköpun úr lúpínufræjum: Einangrun undir þrýstingi
… var við að einangra hreina olíu úr fræjunum með Soxhlet undir þrýstingi, þar sem þessi aðferð er líklegri til að skila hærri nýtni á lífskilvirkum efnum. Koltvísýringur var notaður sem leysir við að aðskilja olíuna úr fræjunum. Unnið var með fastan þrýsting og hitastig, en tímalengd á …
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Wax extraction and characterization from full-fat and defatted rice bran
… determined using 6 different conditions with Soxhlet and Microwave-assisted extraction (MAE). The compositions of WEs from RBO and RBW were also compared. RBW was obtained from RBO by winterization and solvent fractionation. WEs were separated by chromatographic methods, and analyzed as intact …
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Evaluation of Sulfidic Materials in Virginia Highway Corridors
… amount of acidity as ABA. Potential acidity by Soxhlet extraction and PPA were equivalent for 3 of 4 diverse samples. Average acidity and metal contents of leachate from Soxhlet extractors were correlated with acidity and metals of road drainage. Sulfide hazard analysis should be an essential …
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Investigation of liquid carryover in the girdler-sulfide process for production of heavy water at the AEC Savannah River Plant
… which affect extraction efficiency by the Soxhlet method. The efficiency of extraction of the adsorbed materials with both water immiscible and water miscible solvents was shown to increase as the residual moisture content of the carbon decreased. Excess heat input to the Soxhlet boiling …
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The removal of carcinogenic polycyclic aromatic hydrocarbons by activated sludge
… from other organics was a modified Soxhlet technique followed by gas chromatographic analysis. The amount of Benzo-a-pyrene detected in the effluent, supernatant, sludge filtrate and sludge cake was tabulated to determine the mechanism of removal. The experimental results indicated …
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Controlled multi-step purification of single-walled carbon nanotubes
… or SF6. The iron fluorides are removed by a soxhlet extraction with a 6M HCl solution. The purity and quality of each sample were determined by thermo-gravimetric analysis (TGA), Raman spectrometry, ultraviolet-visible-near-IR (UV-vis-near-IR) spectrometry, fluorescence spectrometry and …
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Soy protein-poly (l-lactic acid) blend nanofibers for drug delivery of nardostachys jatamansi
… drug - Nardostachys Jatamansi was subjected to Soxhlet extraction using water and ethanol in equal quantities. Various blends of the drug extract and soy protein solution are prepared and mixed in Poly (L-lactic acid). Nanofibers of Soy Protein - Poly (L-lactic acid) blend along with the drug …
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On-line screening of bioactive compounds and application of comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry for the analysis of birch bark
… compounds compared to those achieved with Soxhlet extraction. With pressurized hot water extraction the amount of extractable phenolic compounds approached for up to 23% of the dry weight whereas the amount was 2-5% (w/w) by Soxhlet extraction. Typical extraction time varied from 20 to 40 …
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The potential application of rapeseed pomace extracts in the prevention and treatment of neurodegenerative diseases.
… the project, three extraction techniques (i.e. Soxhlet, ultrasonic assisted and accelerated solvent extraction) were employed, using a solvent mixture of ethanol and water (95:5) on the RSP samples obtained from the north east of Scotland. Based on the chemical composition of the extracts and …
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Admicellar Polymerization to Compatibilize Calcium Carbonate With Oil-Based Drilling Mud
… the CC surface. BET N2 particle size analysis, Soxhlet extraction of the coated polymer, Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectra analysis, and thermogravimetric analysis (TGA) of the treated CC and polymer extract confirmed the production of a successful thin …
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Evaluation of conditions for quantitative recovery of a drug from animal feed using supercritical fluid CO₂ extraction
… as a feasible alternative to traditional Soxhlet and other types of extraction. In many cases SFE is cleaner, faster, and less expensive than the traditional types of extractions. This investigation has focused on the evaluation of Supercritical CO₂ extraction as a quantitative method for …
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The effect of different sample preparatory protocols on the induction of the aryl hydrocarbon receptor (AhR) in the H4IIE–luc reporter gene bio–assay
… gene assay. The protocols evaluated were either Soxhlet or pressurised liquid extraction (PLE) combined with a manual acid digestion, gel permeation chromatography (GPC) and Florisil fractionation clean-up procedure as well as the automated Total Rapid Prep™(TRP) system which makes use of a PLE …
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